Abstract: An overhead hoist transfer apparatus includes a rail assembly including a straight rail having an empty section, and a curved rail having a curved empty section; an engine including a first LSD having first and second wheels at two sides respectively; and a second LSD having third and fourth wheels at two sides respectively; a moving carriage driven by the engine and suspended from the rail assembly; first and second guide wheels disposed on the first LSD; third and fourth guide wheels disposed on the second LSD; and two guide boards disposed above a joining point of the straight rail and the curved rail. An elevation of the guide boards is equal to that of the guide wheels. The guide board includes a straight edge and a curved edge.

Abstract: A semiconductor device includes a first semiconductor die and a second semiconductor die connected to the first semiconductor die. Each of the first semiconductor die and the second semiconductor die includes a substrate, a conductive bump formed on the substrate and a conductive contact formed on the conductive bump. The conductive contact has an outer lateral sidewall, there is an inner acute angle included between the outer lateral sidewall and the substrate is smaller than 85°, and the conductive contact of the first semiconductor die is connected opposite to the conductive contact of the second semiconductor die.

Abstract: A powered industrial truck includes a lateral movement assembly including four sliding members and four pivotal members both on a wheeled carriage, four links having a first end pivotably secured to the sliding member and a second end pivotably secured to either end of the pivotal member, a motor shaft having two ends pivotably secured to the pivotal members respectively, a first electric motor on one frame member, and four mounts attached to the sliding members respectively; two lift assemblies including a second electric motor, a shaft having two ends rotatably secured to the sliding members respectively, two gear trains at the ends of the shaft respectively, a first gear connected to the second electric motor, a second gear on the shaft, and a first roller chain on the first and second gears; two electric attachments on the platform and being laterally moveable, each attachment. The mount has rollers.

Abstract: A semiconductor structure is provided. The semiconductor structure includes a substrate, a channel layer, a barrier layer, a compound semiconductor layer, a gate electrode, and a stack of dielectric layers. The channel layer is disposed on the substrate. The barrier layer is disposed on the channel layer. The compound semiconductor layer is disposed on the barrier layer. The gate electrode is disposed on the compound semiconductor layer. The stack of dielectric layers is disposed on the gate electrode. The stack of dielectric layers includes layers having different etching rates.

Abstract: An optical fiber network device includes a fiber and a photonic integrated circuit. Fiber receives a first optical signal and transmits a second optical signal. A first wavelength of first optical signal is different from a second wavelength of second optical signal. Photonic integrated circuit includes a laser chip, a photodetector, a wavelength division multiplexing coupler, a first optical modulation element and a second optical modulation element. Laser chip is disposed on photonic integrated circuit, and is configured to generate first optical signal. Photodetector detects second optical signal. Wavelength division multiplexing coupler is configured to couple first optical signal to fiber, and receives second optical signal. First optical modulation element is coupled to wavelength division multiplexing coupler and laser chip, and is configured to modulate first optical signal.

Abstract: An optical fiber transmission device includes a substrate, a photonic integrated circuit, and an optical fiber assembly. The photonic integrated circuit is disposed on an area of the substrate. The substrate has a protruding structure at an interface with an edge of the photonic integrated circuit. The optical fiber assembly includes an optical fiber and a ferrule that sleeves the optical fiber. The protruding structure of the substrate is configured to abut against the ferrule to limit the position of the optical fiber assembly in a vertical direction of the substrate, such that the protruding structure is a stopper for the optical fiber assembly in the vertical direction.

Abstract: A memory device and an operation method thereof are provided. The memory device includes memory cells, each having a static random access memory (SRAM) cell and a non-volatile memory cell. The SRAM cell is configured to store complementary data at first and second storage nodes. The non-volatile memory cell is configured to replicate and retain the complementary data before the SRAM cell loses power supply, and to rewrite the replicated data to the first and second storage nodes of the SRAM cell after the power supply of the SRAM cell is restored.

Abstract: In an embodiment, a device bonding apparatus is provided. The device bonding apparatus includes a first process station configured to receive a wafer; a first bond head configured to carry a die to the wafer, wherein the first bonding head includes a first rigid body and a vacuum channel in the first rigid body for providing an attaching force for carrying the die to the wafer; and a second bond head configured to press the die against the wafer, the second bond head including a second rigid body and an elastic head disposed over the second rigid body for pressing the die, the elastic head having a center portion and an edge portion surrounding the center portion, the center portion of the elastic head having a first thickness, the edge portion of the elastic head having a second thickness, the second thickness being greater than the second thickness.

Abstract: A wrench includes a driving unit located in the head of the wrench. A rod extends through the driving member and includes a stepped recess so as to control a bead in the radial hole of the driving member to secure a socket connected to the driving member. A rotary member is connected to the head and includes a room. A locking member is located in the room and locked to the driving member. A fixing area is formed between the locking member and the driving member so as to fix the locking member and the driving member together. The fixing area ensures that locking member is not separated from the driving member.

Abstract: A wrench includes a function end having an extension portion extending therefrom. Two arms extend from the function end and toward a direction opposite to the extension portion. A space is formed between the two arms and the extension portion. An engaging portion is formed to the distal end of the extension portion for receiving a hand tool. A rotary head is pivotably located in the space of the function end by two bolts respectively extending through the two arms and connected to the rotary head. The rotary head includes an outer part and a control unit which is located in a through hole defined through the outer ring. The control unit includes a control part and a driving part respectively located on two opposite end of the rotary head. The control part is rotated to control the direction that the driving part rotates.

Abstract: A display panel including a pixel array substrate, an opposite substrate, and a display media is provided. The pixel array substrate includes a substrate, a plurality of scan lines, a plurality of data lines, a plurality of pixel units, and a gate driving circuit. The gate driving circuit including a plurality of first signal lines, a plurality of second signal lines, a plurality of dummy signal lines, and a plurality of contact structures is disposed in a peripheral region of the substrate. Each of the second signal lines is electrically connected to one corresponding first signal line. Each of the dummy signal lines is electrically connected to one corresponding second signal line via one corresponding contact structure. Each of the first signal lines is electrically connected to the corresponding second signal line via one corresponding contact structure.

Abstract: A wrench includes a handle and a working end, two arms extend from the working end to form a room between the two arms. Each arm includes a locking hole. A driving head is pivotably connected between the two arms. Two bolts are respectively and threadedly connected to the locking holes of the two arms, and inserted into the two recesses of the driving head to pivotably position the driving head. A wave washer is mounted to each of the two bolts and sandwiched between the driving head and the arm. The convex portions one side of each wave washer contact the outside of the driving head. The convex portions on other side of each wave washer contact the inside of the arm corresponding thereto. The friction between the driving head and the arms is reduced when the driving head is pivoted relative to the arms.

Abstract: A ratchet wrench includes a ratchet unit which has a ratchet tube with a reception hole. A collar is connected to one side of the head and has a slit defined radially through the collar. An engaging member has a first end thereof fixed to the collar, and a second end of the engaging member extends through the slit. The second end of the engaging member is partially located within the through hole of the collar and located above the reception hole of the ratchet tube. An operation ring is mounted to the collar and connected the engaging. A C-clip is mounted to the outer periphery of the collar. When the operation ring is rotated, the second end of the engaging member is pushed to move within the through hole of the collar to position a socket located in the reception hole of the ratchet tube.

Abstract: A ratchet wrench includes a head with a ratchet wheel, a first pawl unit and a second pawl unit received therein. The first pawl unit includes a first pawl and a second pawl, and the second pawl unit includes a third pawl and a fourth pawl. The first and second pawl units are controlled to be engaged with the ratchet wheel so as to provide sufficient number of teeth to be engaged with the ratchet wheel. The ratchet wrench outputs sufficient torque with a small angle of rotation.